A latticed column concrete pouring device under the condition of limited construction space

Abstract

The utility model discloses a construction space is under the trellis column concrete pouring equipment of limited condition. The equipment includes: drive unit, power coupler, pumping unit and electric control unit. Drive unit includes motor power source and hydraulic power source. Power coupler includes first input shaft, second input shaft and output shaft, and first input shaft and second input shaft are all transmission connection with output shaft. Motor power source is connected with first input shaft through first electromagnetic clutch, and first electromagnetic clutch is used for transmitting the output torque of motor power source, and hydraulic power source is connected with second input shaft through second electromagnetic clutch, and second electromagnetic clutch is used for transmitting the output torque of hydraulic power source, and output shaft is transmission connection with pumping unit. Electric control unit is electric connection with first electromagnetic clutch and second electromagnetic clutch respectively, is used for controlling first electromagnetic clutch to engage / separate, and, controls second electromagnetic clutch to separate / engage.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, specifically relating to a lattice column concrete pouring device under conditions of limited construction space. Background Technology

[0002] In the construction of buildings, bridges, subways, and other projects, lattice columns are widely used due to their excellent load-bearing capacity and stability. The quality of the concrete pouring in their core cavity directly affects structural safety and project progress.

[0003] Currently, concrete pouring for lattice columns mainly relies on large concrete pump trucks or stationary trailer pumps in conjunction with ducts or jacking methods. The jacking method involves opening a hole at the bottom of the steel pipe of the lattice column and connecting it to a concrete delivery pipe. The concrete pump pressure is used to squeeze and lift the concrete from bottom to top into the steel pipe until the entire steel pipe column is filled.

[0004] While traditional concrete pump trucks can perform jacking-style pouring, they have significant drawbacks: their bulky size prevents them from entering narrow construction areas; the excessively large turning radius of the pump pipe makes it difficult to adapt to the complex internal layout of lattice columns; long start-up times make them unsuitable for small-scale intermittent operations; and high purchase and maintenance costs limit their adoption in small and medium-sized projects. In response, some small, portable concrete pouring equipment has emerged on the market—specifically, concrete pouring equipment designed for space-constrained conditions. These small, portable concrete pouring devices are typically driven by electric motors or hydraulic systems.

[0005] It's easy to understand that in the initial stages of jacking concrete pouring, the required output pressure for the concrete is not high. However, as the concrete rises, a greater output pressure is needed to complete the jacking process; otherwise, pipe blockage can easily occur. Therefore, in the later stages of jacking concrete pouring, the motor may overload, overheat, or even shut down due to excessive starting current or insufficient torque, failing to meet the demand for continuous high-pressure concrete output. While portable concrete equipment using hydraulic stations can provide high torque after normal operation, its response speed is slow, requiring a certain amount of time to reach the working output pressure. In the early stages of jacking concrete pouring, unstable output from the plunger pump can easily occur, thus affecting structural strength and construction quality. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address the above-mentioned deficiencies in the existing technology by providing a lattice column concrete pouring equipment under the condition of limited construction space, which can complete the concrete pouring of lattice columns.

[0007] According to an embodiment of this utility model, a lattice column concrete pouring device under limited construction space conditions is provided, comprising: a drive unit, a power coupler, a pumping unit, and an electrical control unit. The drive unit includes a motor power source and a hydraulic power source. The power coupler includes a first input shaft, a second input shaft, and an output shaft, both of which are drively connected to the output shaft. The motor power source is connected to the first input shaft via a first electromagnetic clutch, which transmits the output torque of the motor power source. The hydraulic power source is connected to the second input shaft via a second electromagnetic clutch, which transmits the output torque of the hydraulic power source. The output shaft is drively connected to the pumping unit. The electrical control unit is electrically connected to both the first and second electromagnetic clutches, and is used to control the engagement / disengagement of the first electromagnetic clutch and the disengagement / engagement of the second electromagnetic clutch. When the first electromagnetic clutch is engaged, the motor power source drives the first input shaft and the output shaft to rotate, thereby driving the pumping unit to pump concrete. When the second electromagnetic clutch is engaged, the hydraulic power source drives the second input shaft and the output shaft to rotate, thereby driving the pumping unit to pump concrete.

[0008] The concrete pouring equipment of this invention can also be applied to the concrete pouring of other small cross-section components in confined areas.

[0009] This utility model discloses a lattice column concrete pouring device that uses dual power sources to drive the pumping unit and adjusts the output power source according to the concrete pouring stage to achieve the jacking method of lattice column pouring. Specifically, leveraging the advantage of the faster start-up and response speed of the electric motor power source, under low load conditions, the electric motor power source is preferentially used to drive the pumping unit for concrete pumping. That is, in the initial stage of lattice column pouring using the jacking method, the electronic control unit controls the first electromagnetic clutch to switch to the engaged state, so that the torque of the electric motor power source is transmitted to the first input shaft, and the output shaft is driven through the first input shaft, thereby driving the pumping unit; at this time, the second electromagnetic clutch is in the disengaged state, and the hydraulic power source does not participate in the power output. As more and more concrete needs to be jacked, in order to meet the high load conditions, the hydraulic power source is used to continue the jacking method of lattice column pouring. Specifically, the electronic control unit controls the second electromagnetic clutch to engage, allowing the torque from the hydraulic power source to be transmitted to the second input shaft, which then drives the output shaft, thereby driving the pumping unit. Simultaneously, the first electromagnetic clutch disengages, at which point power is no longer output from the motor power source. In summary, this lattice column concrete pouring equipment can complete the concrete pouring of lattice columns.

[0010] Optionally, the concrete pouring equipment for the grid column also includes a piezoelectric sensor, which is installed at the outlet of the pumping unit. The piezoelectric sensor is used to detect the pressure value at the outlet of the pumping unit. The electronic control unit has a pre-stored pressure critical threshold. The electronic control unit is used to receive the pressure value at the outlet of the pumping unit sent by the piezoelectric sensor, and when the pressure value is greater than or equal to the pressure critical threshold, it sends a first switching signal to the first electromagnetic clutch and a second switching signal to the second electromagnetic clutch. The first electromagnetic clutch switches to a disengaged state according to the first switching signal, and the second electromagnetic clutch switches to an engaged state according to the second switching signal.

[0011] Optionally, the power coupler further includes a bevel gear set, comprising a first driving bevel gear, a second driving bevel gear, a first driven bevel gear, and a second driven bevel gear; the extension direction of the first input shaft is on the same extension line as the central axis direction of the first driving bevel gear; the first driving bevel gear is mounted on one end of the first input shaft, and the other end of the first input shaft is connected to the first electromagnetic clutch; the second input shaft is parallel to the first input shaft, and its extension direction is on the same extension line as the central axis direction of the second driving bevel gear; the second driving bevel gear is mounted on one end of the second input shaft, and the other end of the second input shaft is connected to the second electromagnetic clutch; the output shaft is perpendicular to the... The first input shaft and the second input shaft are configured such that the extension direction of the output shaft is on the same extension line as the central axis direction of the first driven bevel gear and the second driven bevel gear. The first driven bevel gear and the second driven bevel gear are both fixedly mounted on the output shaft. The first driving bevel gear meshes with the first driven bevel gear, and the second driving bevel gear meshes with the second driven bevel gear. When the motor power source is engaged with the first input shaft through the first electromagnetic clutch, the motor power source drives the first driving gear and the first driven gear to rotate, thereby driving the output shaft to rotate. When the hydraulic power source is engaged with the second input shaft through the second electromagnetic clutch, the hydraulic power source drives the second driving gear and the second driven gear to rotate, thereby driving the output shaft to rotate.

[0012] Optionally, the motor power source is a permanent magnet synchronous motor, and the hydraulic power source is a hydraulic station.

[0013] Optionally, the pumping unit is a dual-chamber plunger pump, and the output shaft of the power coupler is connected to the crankshaft of the dual-chamber plunger pump.

[0014] Optionally, the concrete pouring equipment for the column structure also includes a hopper, the upper end of which is provided with an open inlet and the lower end with a feed port, the feed port being connected to the inlet of the dual-chamber plunger pump.

[0015] Optionally, the concrete pouring equipment for the column structure also includes a mixing unit, which is located between the hopper and the dual-chamber plunger pump. Its inlet end is connected to the feed port of the hopper, and its outlet end is connected to the inlet of the dual-chamber plunger pump. The mixing unit is used to mix the concrete in the hopper.

[0016] Optionally, the concrete pouring equipment for the lattice column also includes a conveying pipeline, one end of which is connected to the outlet of the dual-chamber plunger pump, and the other end is inserted into the bottom of the lattice column.

[0017] Optionally, the conveying pipe is a three-layer composite hose, which is formed by stacking a polyurethane wear-resistant layer, a stainless steel wire braided layer and a TPU material layer from the inside out.

[0018] Optionally, the concrete pouring equipment for the column structure also includes a trolley base, on which the power coupler and the pumping unit are mounted. The motor power source is detachably connected to the power coupler, the hydraulic power source is detachably connected to the power coupler, the mixing unit is detachably connected to the pumping unit, the hopper is detachably connected to the mixing unit, and the conveying pipeline is detachably connected to the outlet of the dual-chamber plunger pump. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a lattice column in some embodiments of this utility model; Figure 2 This is a structural schematic diagram of the lattice column concrete pouring equipment in some embodiments of this utility model; Figure 3 This is a schematic diagram of the internal structure of the power coupler in some embodiments of this utility model; Figure 4 This is a schematic diagram of the electronic control structure in some embodiments of this utility model.

[0020] In the diagram: 1. Lattice column; 2. Drive unit; 21. Motor power source; 22. Hydraulic power source; 3. Power coupler; 31. First input shaft; 32. Second input shaft; 33. Output shaft; 34. First electromagnetic clutch; 35. Second electromagnetic clutch; 36. First driving bevel gear; 37. Second driving bevel gear; 38. First driven bevel gear; 39. Second driven bevel gear; 4. Pumping unit; 5. Electrical control unit; 6. Hopper; 7. Mixing unit; 8. Conveying pipeline. Detailed Implementation

[0021] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience and simplification of the description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] First, it needs to be explained that, as Figure 1 As shown, the jacking method is currently the primary method for pouring concrete into lattice columns. This method involves connecting a concrete delivery pipe to a hole at the bottom of the steel pipe of the lattice column, and using the pressure of a concrete pump to force concrete upwards into the pipe until the entire column is filled. In the initial stages of jacking, the required output pressure is low, but as the concrete rises, a higher output pressure is needed to complete the jacking process; otherwise, pipe blockage can easily occur. Therefore, in the later stages of jacking, the motor may overload, overheat, or even shut down due to excessive starting current or insufficient torque, failing to meet the demand for continuous high-pressure concrete output. While portable concrete equipment using a hydraulic station can provide high torque after normal operation, its slow response time requires time to reach the working output pressure. In the early stages of jacking, unstable output from the plunger pump can easily occur, affecting structural strength and construction quality.

[0026] In response to this, this utility model proposes a concrete pouring device for lattice columns under conditions of limited construction space. Example 1

[0027] Please see Figure 2 and Figure 4 This utility model discloses a lattice column concrete pouring equipment under the condition of limited construction space, including: a drive unit 2, a power coupler 3, a pumping unit 4 and an electrical control unit 5.

[0028] The drive unit 2 includes a motor power source 21 and a hydraulic power source 22. The power coupler 3 includes a first input shaft 31, a second input shaft 32, and an output shaft 33. Both the first input shaft 31 and the second input shaft 32 are drive-connected to the output shaft 33. The motor power source 21 is connected to the first input shaft 31 via a first electromagnetic clutch 34, which transmits the output torque of the motor power source 21. The hydraulic power source 22 is connected to the second input shaft 32 via a second electromagnetic clutch 35, which transmits the output torque of the hydraulic power source 22. The output shaft 33 is drive-connected to the pumping unit 4. The electronic control unit 5 is electrically connected to the first electromagnetic clutch 34 and the second electromagnetic clutch 35 respectively, and is used to control the engagement / disengagement of the first electromagnetic clutch 34 and the disengagement / engagement of the second electromagnetic clutch 35. When the first electromagnetic clutch 34 is engaged, the motor power source 21 drives the first input shaft 31 and the output shaft 33 to rotate, thereby driving the pumping unit 4 to pump concrete. When the second electromagnetic clutch 35 is engaged, the hydraulic power source 22 drives the second input shaft 32 and the output shaft 33 to rotate, thereby driving the pumping unit 4 to pump concrete.

[0029] It should be noted that the concrete pouring equipment in this embodiment can also be applied to the concrete pouring of other small cross-section components in the confined area.

[0030] In this embodiment, the electrical control unit 5 can be controlled by commercially available industrial control equipment. Those skilled in the art only need to program and control the industrial control equipment according to actual operational requirements.

[0031] The lattice column concrete pouring equipment in this embodiment, operating under limited construction space, uses dual power sources to drive the pumping unit 4. The output power source is adjusted according to the concrete pouring stage to achieve the jacking method for pouring the lattice column 1. Specifically, leveraging the faster start-up and response speed of the motor power source 21, it is prioritized to drive the pumping unit 4 for concrete pumping under low-load conditions. That is, in the initial stage of pouring the lattice column 1 using the jacking method, the electronic control unit 5 controls the first electromagnetic clutch 34 to engage, allowing the torque of the motor power source 21 to be transmitted to the first input shaft 31, which in turn drives the output shaft 33, thereby driving the pumping unit 4. At this time, the second electromagnetic clutch 35 is disengaged, and the hydraulic power source 22 does not participate in power output. As more concrete needs to be lifted, the hydraulic power source 22 is used to continue the jacking method for pouring the lattice column 1 to meet high-load conditions. Specifically, the electronic control unit 5 controls the second electromagnetic clutch 35 to switch to the engaged state, so that the torque of the hydraulic power source 22 is transmitted to the second input shaft 32, and the output shaft 33 is driven through the second input shaft 32, thereby driving the pumping unit 4; at the same time, the first electromagnetic clutch 34 switches to the disengaged state, at which time the motor power source 21 no longer outputs power.

[0032] In summary, this lattice column concrete pouring equipment is capable of completing the concrete pouring of lattice column 1.

[0033] Please see Figure 4 In this embodiment, the concrete pouring equipment for the lattice column also includes a piezoelectric sensor (not shown in the figure). The piezoelectric sensor is installed at the outlet of the pumping unit 4 and is used to detect the pressure value at the outlet of the pumping unit 4. The electronic control unit 5 has a pre-stored pressure critical threshold. The electronic control unit 5 is used to receive the pressure value at the outlet of the pumping unit 4 sent by the piezoelectric sensor, and when the pressure value is greater than or equal to the pressure critical threshold, it sends a first switching signal to the first electromagnetic clutch 34 and a second switching signal to the second electromagnetic clutch 35. The first electromagnetic clutch 34 switches to the disengaged state according to the first switching signal, and the second electromagnetic clutch 35 switches to the engaged state according to the second switching signal.

[0034] Of course, before the second electromagnetic clutch 35 switches to the engaged state, the hydraulic power source 22 can be pre-started. The hydraulic power source 22 has enough response time to build up pressure. After the hydraulic power source 22 is running normally, the electronic control unit 5 controls the second electromagnetic clutch 35 to switch to the engaged state, so that the hydraulic power source 22 directly transmits torque to the output shaft 33.

[0035] In other words, before sending the second switching signal to the second electromagnetic clutch 35, the electronic control unit 5 first sends a pre-start signal to the hydraulic power source 22, and the hydraulic power source 22 starts according to the pre-start signal. This can better avoid the problem of unstable output of the hydraulic power source 22 during the start-up phase.

[0036] Furthermore, both the first electromagnetic clutch 34 and the second electromagnetic clutch 35 can be commercially available electromagnetic clutches, as long as they meet the wear resistance requirements.

[0037] Please see Figure 3 In this embodiment, the power coupler 3 further includes a bevel gear set. The bevel gear set includes a first driving bevel gear 36, a second driving bevel gear 37, a first driven bevel gear 38, and a second driven bevel gear 39.

[0038] The first input shaft 31 extends along the same line as the central axis of the first driving bevel gear 36. The first driving bevel gear 36 is mounted on one end of the first input shaft 31, and the other end of the first input shaft 31 is connected to the first electromagnetic clutch 34. The second input shaft 32 is parallel to the first input shaft 31, and its extension direction is aligned with the central axis of the second driving bevel gear 37. The second driving bevel gear 37 is mounted on one end of the second input shaft 32, and the other end of the second input shaft 32 is connected to the second electromagnetic clutch 35. The output shaft 33 is perpendicular to both the first input shaft 31 and the second input shaft 32, and its extension direction is aligned with the central axis of the first driven bevel gear 38. The central axis of the second driven bevel gear 39 is on the same extension line. The first driven bevel gear 38 and the second driven bevel gear 39 are both fixedly mounted on the output shaft 33. The first driving bevel gear 36 meshes with the first driven bevel gear 38, and the second driving bevel gear 37 meshes with the second driven bevel gear 39. When the motor power source 21 is engaged with the first input shaft 31 through the first electromagnetic clutch 34, the motor power source 21 drives the first driving gear and the first driven gear to rotate, thereby driving the output shaft 33 to rotate. When the hydraulic power source 22 is engaged with the second input shaft 32 through the second electromagnetic clutch 35, the hydraulic power source 22 drives the second driving gear and the second driven gear to rotate, thereby driving the output shaft 33 to rotate.

[0039] The use of bevel gear transmission enables convenient power transmission and switching between the electric motor and the hydraulic power source 22. It also has the advantages of compact structure, high efficiency, strong load adaptability, high reliability and convenient maintenance.

[0040] In this embodiment, the motor power source 21 is a commercially available permanent magnet synchronous motor, and the hydraulic power source 22 is a commercially available hydraulic station. Anything that can meet the output pressure requirements of the pumping unit 4 is acceptable.

[0041] The pumping unit 4 uses a commercially available dual-chamber piston pump, and the output shaft 33 of the power coupler 3 is connected to the crankshaft of the dual-chamber piston pump.

[0042] In this embodiment, the concrete pouring equipment for the grid column also includes a hopper 6. The upper end of the hopper 6 is provided with an open feed port, and the lower end is provided with a feeding port, which is connected to the inlet of the dual-chamber plunger pump.

[0043] Specifically, hopper 6 can be a commercially available foldable hopper. For ease of handling, hopper 6 is detachably connected to the inlet of the dual-chamber plunger pump. During handling, hopper 6 and the dual-chamber plunger pump can be separated and transported separately. After assembly, workers pour concrete directly into hopper 6. The concrete enters the dual-chamber plunger pump through hopper 6 and is pumped into the inner cavity of the lattice column 1.

[0044] Furthermore, the concrete pouring equipment for the column also includes a mixing unit 7, which is located between the hopper 6 and the dual-chamber plunger pump. Its inlet end is connected to the feed port of the hopper 6, and its outlet end is connected to the inlet of the dual-chamber plunger pump. The mixing unit 7 is used to mix the concrete in the hopper 6.

[0045] Furthermore, the concrete pouring equipment for this lattice column also includes a conveying pipe 8, one end of which is connected to the outlet of a dual-chamber plunger pump, and the other end is inserted into the bottom of the lattice column 1.

[0046] In this embodiment, the conveying pipe 8 is a three-layer composite hose, which is formed by stacking a polyurethane wear-resistant layer, a stainless steel wire braided layer and a TPU material layer from the inside to the outside.

[0047] In some other embodiments, the delivery conduit 8 may also be a stainless steel corrugated hose.

[0048] In this embodiment, in order to improve the portability of the concrete pouring equipment for the grid column, the equipment also includes a trolley base (not shown in the figure), a power coupler 3 and a pumping unit 4 are installed on the trolley base, the motor power source 21 is detachably connected to the power coupler 3, the hydraulic power source 22 is detachably connected to the power coupler 3, the mixing unit 7 is detachably connected to the pumping unit 4, the hopper 6 is detachably connected to the mixing unit 7, and the conveying pipe 8 is detachably connected to the outlet of the dual-chamber plunger pump.

[0049] It's easy to understand that when this equipment needs to be moved, the hydraulic power source 22 and the electric motor power source 21 can be disassembled from the power coupler 3 and moved separately. The mixing unit 7 and the hopper 6 can also be disassembled and moved separately. This modular assembly makes each module small in size and weight, allowing workers to move these modules individually. Moreover, it also facilitates access to narrow construction areas with only small elevators.

[0050] After all the modules are in the construction area, the workers assemble them and they are ready for use. Example 2

[0051] This embodiment is a further explanation and optimization of the lattice column concrete pouring equipment under the limited construction space conditions in Embodiment 1, aiming to provide more detailed technical details or demonstrate the application effect of the equipment under different conditions.

[0052] This lattice column concrete pouring equipment has undergone a lightweight redesign. Modular architecture: The whole machine is broken down into four major components: pumping unit 4, power module, control box, and foldable hopper 6. The maximum weight of a single module is ≤25kg, supporting manual handling up stairs or transportation by small elevator.

[0053] The equipment is also designed for rapid assembly: the modules use aviation plug-type interfaces (including hydraulic quick connectors and electrical docking ports) to enable on-site assembly to be completed within 10 minutes.

[0054] Lightweight materials are used in the equipment: the pump body shell is made of precision cast aluminum alloy (3mm wall thickness), and the pipe support is made of carbon fiber reinforced composite material, reducing the overall weight by 60% compared to traditional equipment.

[0055] The lattice column concrete pouring equipment also features an optimized micro-pumping system. Firstly, it incorporates a dual-mode (dual-output) drive design: equipped with both electric and hydraulic power sources. The electric mode is suitable for vertical pouring up to ≤15m (power 5.5kW), while the hydraulic mode supports high-rise pouring from 15-30m (pressure 15MPa).

[0056] By adopting commercially available intelligent industrial control equipment, this lattice column concrete pouring equipment can also achieve intelligent flow control: by dynamically adjusting the plunger pump stroke frequency (range 5-30 times / minute) through PID algorithm, it can achieve stepless flow output of 5-10m³ / h.

[0057] In some embodiments, the lattice column concrete pouring equipment adopts a flexible piping system: a three-layer composite hose (inner polyurethane wear-resistant layer, middle stainless steel wire braided layer, outer anti-static TPU layer), with a minimum bending radius of 8 times the pipe diameter (DN50 pipe can be bent to Φ400mm).

[0058] To facilitate operation of the equipment, the human-machine interface was upgraded. Specifically, a commercially available intelligent control terminal was adopted, equipped with a 7-inch industrial touch screen, which integrates three major functional modules: Pouring Navigation (module): automatically calculates the optimal pipe layout path and pouring volume by inputting the dimensions of the lattice column 1; Fault Self-Diagnosis (module): monitors 20 parameters such as pump pressure, flow rate, and motor temperature in real time, triggering audible and visual alarms when abnormalities occur; Construction Record Module: stores the pouring data of the most recent 1000 columns (including timestamps, concrete volume, and operator information).

[0059] This lattice column concrete pouring equipment also has a wireless remote control function, supporting remote operation within a range of 50 meters, which is particularly suitable for high-altitude dangerous operation scenarios.

[0060] This lattice column concrete pouring equipment also includes a spiral self-cleaning mechanism, achieving a breakthrough in leak-proof technology. Specifically, a variable-speed screw conveyor (5-30 rpm) is added to the bottom of hopper 6, working in conjunction with a φ200mm corrugated pipe to achieve continuous and uniform material feeding. The lattice column concrete pouring equipment also includes a pneumatic backwashing system. Specifically, when an abnormal increase in pipeline pressure is detected (≥1.5 times the set value), the pneumatic backwashing system automatically activates 0.6MPa compressed air for pulse-type unblocking. In this embodiment, the environmental efficiency of the lattice column concrete pouring equipment is improved: Firstly, a fully enclosed conveying system is adopted: the entire process from the hopper inlet 6 to the pouring end is sealed, with dust emission <5mg / m³. Secondly, a residual material recovery device is adopted: a rotatable receiving box is installed at the end of the pump pipe, and reverse pumping is performed after construction to return the residual concrete (about 0.02m³) in the pipe to a special container. Example 3

[0061] This embodiment is a further explanation of the lattice column concrete pouring equipment under the condition of limited construction space in Embodiment 1.

[0062] In the field of building engineering, the concrete pouring of lattice columns has long faced the following technical challenges: 1. Manual operation is inefficient. Traditional concrete pouring relies on workers carrying buckets of concrete to pour the concrete, requiring 2-3 people working together. Because the buckets have limited capacity, workers need to frequently travel back and forth to retrieve the concrete, resulting in the pouring of a single lattice column taking over 40 minutes. This method is not only inefficient but also leads to high worker fatigue and exhaustion.

[0063] 2. Difficulty in casting complex structures The interior of a lattice column often contains complex structures such as multiple layers of partitions and reinforcing bars. When pouring concrete manually, it is difficult to accurately control the drop position, which can easily lead to the following quality problems: the concrete cannot fully fill the narrow cavity, forming voids; the aggregate is unevenly distributed in areas with dense reinforcement; and concrete splashing during high-altitude pouring causes waste.

[0064] 3. Existing equipment has poor adaptability. While traditional concrete pump trucks can improve efficiency, they have significant drawbacks: The equipment is too large to fit into narrow construction areas. The pump pipe's turning radius is too large, making it difficult to adapt to the complex internal orientation of lattice column 1. The equipment has a long startup preparation time and is not suitable for small-scale intermittent operations. The high purchase and maintenance costs make it difficult to promote in small and medium-sized projects. 4. Significant environmental and safety hazards. Manual dumping operations easily lead to concrete spillage, wasting materials and polluting the construction site. When working at heights, workers must climb scaffolding to pour concrete, posing a risk of fall. In addition, the dust and noise generated by open dumping also have a negative impact on the environment.

[0065] To address the aforementioned issues, the main body of the lattice column concrete pouring equipment in this embodiment consists of the following core components: Power module: located at the front of the equipment base, including: a 5.5kW permanent magnet synchronous motor (with frequency converter); hydraulic station (maximum output pressure 20MPa, oil tank volume 15L).

[0066] The dual-power coupler 3 achieves automatic switching between electric and hydraulic modes via an electromagnetic clutch.

[0067] Pumping unit 4 uses a double-cylinder plunger pump (cylinder diameter 80mm, stroke 200mm).

[0068] The directional valve assembly is equipped with a pressure compensator (compensation range 10-25MPa).

[0069] Flow sensor (accuracy ±1.5%) and pressure transmitter (range 0-30MPa) The hopper 6 system uses a foldable hopper 6 with a volume of 0.3m³ (unfolded dimensions 1.2×0.8m, folded thickness 0.2m). The bottom of the hopper 6 is equipped with a twin-shaft agitator (speed adjustable range 10-50rpm).

[0070] An ultrasonic level gauge (measurement accuracy ±5mm) is installed inside hopper 6 to detect the material level inside hopper 6.

[0071] The conveying pipeline 8 includes: main pump pipe: DN50 stainless steel corrugated hose (pressure resistance rating PN16); end casting pipe: φ80mm wear-resistant rubber hose (with magnetic quick coupling); pipeline support frame: carbon fiber telescopic rod (extension length 1-5m).

[0072] The following is a further explanation of the working process of the pumping system of the lattice column concrete pouring equipment in Example 1.

[0073] Pumping operations shall be carried out in accordance with the following steps: During the concrete delivery stage, a. Operators set the target pouring volume via touch screen (e.g., 0.8m³ for a single lattice column 1); b. The plunger pump performs reciprocating motion: Suction stroke: The reversing valve opens the feed port, the plunger retracts to create negative pressure, and the concrete is sucked into the pump chamber; Push stroke: The reversing valve switches to the discharge port, and the plunger advances to pressurize and output concrete.

[0074] c. Adaptive stress compensation: When a high vertical height is detected, the system automatically increases the output pressure by 2MPa; If a sudden change in pipeline resistance occurs (such as a blockage at a bend), the pressure fluctuation absorption device should be activated immediately.

[0075] As can be seen, the lattice column concrete pouring equipment in this embodiment can realize automated concrete pouring, thereby solving the problem of low efficiency of manual operation.

[0076] The following is an implementation description of the anti-leakage control of the lattice column concrete pouring equipment in Example 1. The anti-leakage function is achieved through the following linkage mechanism: Emergency handling of blockages a. When the pump pressure exceeds the set value of 120% for 10 consecutive seconds, the control system executes a three-level response: Level 1 response, reducing the plunger pump frequency to the lowest speed (5 times / minute); Level 2 response, starting air pressure backflushing (0.6MPa compressed air pulse, frequency 2Hz); Level 3 response, forcibly switching the pumping direction to pump the blockage back to hopper 6.

[0077] b. After the unblocking is completed, the original working parameters will be automatically restored and the fault code will be recorded.

[0078] The following is a description of the precise pouring process using the lattice column concrete pouring equipment in Example 1. The specific operation is as follows: Pipe positioning steps a. Insert the end casting pipe into the pre-drilled hole at the top of the lattice column 1 (hole diameter ≥ 100mm); b. Connect the pipes in sections using magnetic connectors, with a support point installed every 2 meters of extension; c. Use a laser locator to calibrate the position of the pipe end outlet (accuracy ±5mm); Layered pouring control; After every 0.3m³ of concrete is poured, the pipe is automatically raised by 0.5m. During the lifting process, maintain a low pumping speed of 0.5 m³ / h to prevent concrete from breaking apart; Switch to fine mode (flow rate 3m³ / h) when 1m away from the top of the column.

[0079] The following is an implementation description of the environmental protection function of the lattice column concrete pouring equipment in Example 1.

[0080] First, dust control is implemented: the feed inlet of hopper 6 is equipped with a silicone sealing ring (compression ≥30%); second, a double-layer labyrinth sealing structure is adopted at each pipe connection.

[0081] Finally, waste material recycling is implemented: a. After pouring is complete, select "Pipe Cleaning" mode on the touchscreen; b. Perform reverse pumping for 30 seconds to return the residual concrete to a dedicated collection bag; c. Turn on the vibrator (frequency 50Hz) to shake off the deposits on the pipe wall.

[0082] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A concrete pouring device for lattice columns under conditions of limited construction space, characterized in that, include: Drive unit, power coupler, pumping unit, and electronic control unit; The drive unit includes an electric motor power source and a hydraulic power source. The power coupler includes a first input shaft, a second input shaft, and an output shaft, wherein both the first input shaft and the second input shaft are drively connected to the output shaft. The motor power source is connected to the first input shaft via a first electromagnetic clutch, which is used to transmit the output torque of the motor power source. The hydraulic power source is connected to the second input shaft via a second electromagnetic clutch, which is used to transmit the output torque of the hydraulic power source. The output shaft is connected to the pumping unit via a transmission connection. The electronic control unit is electrically connected to the first electromagnetic clutch and the second electromagnetic clutch respectively, and is used to control the engagement / disengagement of the first electromagnetic clutch and the disengagement / engagement of the second electromagnetic clutch. When the first electromagnetic clutch engages, the motor power source drives the first input shaft and output shaft to rotate, thereby driving the pumping unit to pump concrete. When the second electromagnetic clutch is engaged, the hydraulic power source drives the second input shaft and output shaft to rotate, thereby driving the pumping unit to pump concrete.

2. The lattice column concrete pouring equipment under limited construction space conditions according to claim 1, characterized in that, It also includes a piezoelectric sensor, which is disposed at the outlet of the pumping unit and is used to detect the pressure value at the outlet of the pumping unit. The electronic control unit has a pre-stored pressure threshold. It receives the pressure value at the pumping unit outlet from the piezoelectric sensor, and when the pressure value is greater than or equal to the pressure threshold, sends a first switching signal to the first electromagnetic clutch and a second switching signal to the second electromagnetic clutch. The first electromagnetic clutch switches to the disengaged state according to the first switching signal, and the second electromagnetic clutch switches to the engaged state according to the second switching signal.

3. The lattice column concrete pouring equipment under limited construction space conditions according to claim 1, characterized in that, The power coupler also includes a bevel gear set, which includes a first driving bevel gear, a second driving bevel gear, a first driven bevel gear, and a second driven bevel gear. The extension direction of the first input shaft is on the same extension line as the central axis of the first driving bevel gear. The first driving bevel gear is mounted on one end of the first input shaft, and the other end of the first input shaft is connected to the first electromagnetic clutch. The second input shaft is arranged parallel to the first input shaft, and the extension direction of the second input shaft is on the same extension line as the central axis of the second driving bevel gear. The second driving bevel gear is mounted on one end of the second input shaft, and the other end of the second input shaft is connected to the second electromagnetic clutch. The output shaft is perpendicular to the first input shaft and the second input shaft. The extension direction of the output shaft is on the same extension line as the central axis of the first driven bevel gear and the second driven bevel gear. Both the first driven bevel gear and the second driven bevel gear are fixedly mounted on the output shaft. The first driving bevel gear meshes with the first driven bevel gear, and the second driving bevel gear meshes with the second driven bevel gear. When the motor power source engages with the first input shaft via the first electromagnetic clutch, the motor power source drives the first driving gear and the first driven gear to rotate, thereby driving the output shaft to rotate. When the hydraulic power source engages with the second input shaft via the second electromagnetic clutch, the hydraulic power source drives the second driving gear and the second driven gear to rotate, thereby driving the output shaft to rotate.

4. The lattice column concrete pouring equipment under confined construction space conditions according to any one of claims 1-3, characterized in that, The motor power source is a permanent magnet synchronous motor, and the hydraulic power source is a hydraulic station.

5. The lattice column concrete pouring equipment under limited construction space conditions according to claim 1, characterized in that, The pumping unit employs a dual-chamber plunger pump, and the output shaft of the power coupler is connected to the crankshaft of the dual-chamber plunger pump.

6. The lattice column concrete pouring equipment under limited construction space conditions according to claim 5, characterized in that, It also includes a hopper, the upper end of which is provided with an open feed port and the lower end of which is provided with a feed port, which is connected to the inlet of the dual-chamber plunger pump.

7. The lattice column concrete pouring equipment under limited construction space conditions according to claim 6, characterized in that, It also includes a mixing unit located between the hopper and the dual-chamber plunger pump. Its inlet end is connected to the feed port of the hopper, and its outlet end is connected to the inlet of the dual-chamber plunger pump. The mixing unit is used to mix the concrete in the hopper.

8. The lattice column concrete pouring equipment under limited construction space conditions according to claim 7, characterized in that, It also includes a delivery pipe, one end of which is connected to the outlet of the dual-chamber plunger pump, and the other end is inserted into the bottom of the lattice column.

9. The lattice column concrete pouring equipment under limited construction space conditions according to claim 8, characterized in that, The conveying pipeline is a three-layer composite hose, which is formed by stacking a polyurethane wear-resistant layer, a stainless steel wire braided layer and a TPU material layer from the inside out.

10. The lattice column concrete pouring equipment under limited construction space conditions according to claim 8, characterized in that, It also includes a trolley base, on which the power coupler and the pumping unit are mounted. The electric motor power source is detachably connected to the power coupler, and the hydraulic power source is detachably connected to the power coupler. The stirring unit is detachably connected to the pumping unit, the hopper is detachably connected to the stirring unit, and the conveying pipe is detachably connected to the outlet of the dual-chamber plunger pump.

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